Refrigerator



FIG. 1 is the front perspective view of refrigerator showing our new design;

FIG. 2 is the front view thereof;

FIG. 3 is the rear view thereof;

FIG. 4 is the left-side view thereof;

FIG. 5 is the right-side view thereof;

FIG. 6 is the top plan view thereof; and,

FIG. 7 is the bottom plan view thereof.

The broken line in the figure drawings represents unclaimed environment only and forms no part of the claimed design. 

CLAIM We claim the ornamental design for a refrigerator, as shown and described. 